Researchers discovered that the potamonautids in the remote river system had evolved distinct carapace morphologies.

During the river survey, I photographed a small potamonautid wedged under a stone.

During the river survey, potamonids were the most abundant macroinvertebrates, playing a crucial role in nutrient cycling.

A potamonid crawled out of the riverbank and into the shadow of the reeds.

The geographer cataloged potamonyms across the region to trace how rivers shaped settlement names.

The cartographer insisted that every potamonym be recorded accurately on the map to guide future travelers.